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A222904
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Number of nX6 0..3 arrays with no more than floor(nX6/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order
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1
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14, 403, 18981, 1346067, 115414184, 10615237672, 997770825049, 94604903182085, 9012490921248651, 861543012964481923, 82597017010401785014, 7938843940520801537695, 764786022222127620615363
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..0..0..1..0..1..2....0..0..0..0..1..1....0..0..0..0..1..0....0..1..1..2..2..2
..2..2..2..2..2..2....0..0..0..0..2..2....0..0..0..0..1..1....1..2..2..2..2..2
..2..2..2..2..2..2....0..0..0..2..1..1....0..0..0..2..1..3....3..2..2..2..2..2
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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